Is Your Savana 3500 Plagued by Electrical Gremlins?
If your 2008-2012 GMC Savana 3500 is experiencing bizarre electrical issues like flickering lights, malfunctioning power windows or locks, or random warning lights on your dashboard, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central command center for your van’s body electronics, and when it starts to fail, it can create a cascade of frustrating and unpredictable problems. Don’t waste time and money chasing down phantom wiring issues. Restore your vehicle’s functionality and reliability with our direct-fit, pre-programmed Body Control Module.
From the Diagnostic Bay
We had a contractor come in with his ’11 Savana 3500 work van. His complaint was that the interior dome lights would stay on intermittently, draining the battery, and his power door locks only worked when they wanted to. He was convinced he had a short somewhere in the wiring harness. After a quick scan, we saw multiple communication codes pointing to the BCM. Instead of hours of wiring diagnostics, we installed a VIN-programmed BCM. In less than an hour, every function was back to normal. He was back on the job site the same afternoon, relieved that the fix was so straightforward.
Symptoms of a Failing Body Control Module
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system or keyless entry malfunctioning.
- ✔ False warnings appearing on the instrument cluster (e.g., “Door Ajar”).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers behaving erratically or not parking in the correct position.
- ✔ Communication issues with other vehicle modules, leading to various drivability problems.
The Plug-and-Play Solution: A Pre-Programmed 2008-2012 Savana 3500 BCM
Forget expensive trips to the dealership for programming. Our service is designed to get you back on the road with minimal hassle. When you order this 2008-2012 Savana 3500 BCM, we flash it with the latest GM-certified software specifically for your vehicle. All we need is your VIN (Vehicle Identification Number) at checkout. This ensures that the module communicates perfectly with your van’s existing systems right out of the box, restoring factory functionality without the need for specialized scan tools for initial setup.
Installation and Post-Install Procedures
While this module is designed for a straightforward installation, some vehicles may require minor post-installation steps to ensure all systems are perfectly synchronized. Please be aware of the following potential procedures:
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This indicates a sync mismatch between the new BCM and the airbag system’s SDM (Sensing and Diagnostic Module). A professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure to resolve this.
- Brake Pedal Position Relearn: To ensure accurate brake light operation and traction control performance, a brake pedal position sensor recalibration might be necessary. This procedure can often be performed with a compatible high-end diagnostic tool.
Note: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Fitment and Compatibility
This BCM, part number 20935349, is a direct replacement for a wide range of GM vehicles. It replaces numerous original part numbers, ensuring broad compatibility. Please verify your original part number against the list below to confirm fitment.
Replaces Part Numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084 and more.
This module fits models such as the GMC Acadia, Savana, Yukon; Chevrolet Equinox, Express, Impala, Tahoe, Traverse; Cadillac CTS, DTS, Escalade; Buick Enclave, Lucerne, and others. Please check the detailed fitment list to confirm compatibility with your specific vehicle and options.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We handle the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for installation, loaded with the latest GM software for your specific vehicle.
Where is the BCM located on a 2008-2012 Savana 3500?
On most GMC Savana and Chevrolet Express vans from this era, the Body Control Module is located in the center dash area, often accessible by removing lower dash panels. We always recommend consulting a vehicle-specific service manual for the exact location and removal procedure.
What happens if my airbag light is on after installing the new BCM?
If the airbag light comes on, it means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). A technician with a professional-grade scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.
Is there a core charge for my old part?
No, there is no core charge for this part. You can keep your original module without needing to send it back to us.
Will this fix my intermittent stalling issue?
While a BCM can cause a wide array of issues, intermittent stalling is more commonly related to the Engine Control Module (ECM), fuel system, or ignition system. The primary role of this 2008-2012 Savana 3500 BCM is to manage body electronics, not engine performance.